Sash-fastener



(No Model.)

T. B. ROSS.

SASH FASTENER.

Thaw; as 720.5:

A Home) No. 319,324. Patented June 2, 1885.

WITNESSES Nv PETERS. Fholo-Lilhognpher, wnhington, ac.

warren r'rns ATENI mace.

THOMAS B. ROSS, OF EVANSVILLE, INDIANA.

SASH -FASTENER.

SPECIFICATION forming part of Letters Patent No. 319,324, dated June 2,1885.

Application filed December 4, 1883. (No model.)

To all whom it may concern:

Be it known that I, THOMAS E. Ross, a cit-izen of the United States,residing at Evansville, in the county of Vanderburg and State ofIndiana, have invented certain new and useful Improvements inWindow-Fasteners, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to improvements in window-fasteners, and has forits object to lock the sash in any position in which it may be placed,and thus prevent the sash from being either raised or lowered; and itconsists, essentially, in combining a gravitating locking-pawl and anoperating bell-crank lever with a gear-wheel mounted in a box located inthe window-casing, and adapted to engage a rack-bar attached to theadjacent edge of the window-sash.

Figure 1 is a front elevation of a windowframe and sash provided withthis attachment. Fig. 2 is a view of the sash removed from the frame,and shows some of the parts of the fastener in detail. Fig. 3 is an edgeview of a portion of the window-frame with a part broken away, and showsthe construction of the fastener. Fig. 4 is a detail view of a modifiedform of the device for unlocking the fastener.

The letter A indicates the window-frame.

B is the sash. E is a rack bar secured thereto, and K a spring on theopposite side thereof.

G is a metal plate secured to the windowframe, and has lugs 0, to whichis pivoted the horizontal arm of the bell-crank lever D, to the portionD of which is attached a button, a, the outer surface of which protrudesslightly through the plate 0, as shown in Figs. 1 and 3. The end of thearmD may be reduced, so as to enter openings 9 in the plate or rod ofthe gravitating locking-pawl G, which is provided with a head, G, and alockingstud, g, which, when the fastener is to be looked, enters betweentwo of the teeth of the spur-wheel H through a suitable opening in thetop of the box F. The plate or rod passes through a suitable guide orguides attached to the box F, and the specific gravity of the pawlcauses 0 its head G to rest upon the top of the box F, and when in thisposition the fasteneris looked, as the wheel H is thereby prevented fromturning on its axis; but if pressure is applied to the button a theinner end of the arm D is raised, together with rod G, its head G, andlocking device g, and by this means the spurwheel H is released and ispermitted to revolve freely when engaged by the teeth of the rateh-bar Eas the sash B is either raised or lowered.

K is a spring attached to one side of the sash, and is intended to forcethe sash and the teeth of the rack-bar against and into the teeth ofspur-wheel H, and thereby provide against the swelling or shrinkage ofthe wood-work.

This sash-fastener is to be used either on car or house windows.

I desire to observe that I am aware that it is not broadly new toprovide a window-sash with a rack-bar on one side and to locate withinthe window-casing a box carrying a gear-wheel and a locking-pawl, thegear-wheel being adapted to intergear with the rack and the pawl withthe gear, for the purpose of 7 3 holding the sash at varying heights,and that I do not, therefore, broadly lay claim to such.

Having described my invention, what I desire to secure by LettersPatent, and claim, is

1. In a sash-fastener, the combination,with the window-frame provided onone side with a pressure-spring and on the other side with a rack-bar,of a box located within the window-casing, and carrying a gear-wheelwhich meshes with said rack, the gravitating sliding 8 5 locking-pawlhaving a weighted head and a projecting stud, and the pivoted bell-cranklever connected at one end with said gravi tating pawl, and provided atthe other with a button which slightly protrudes beyond the surface ofthe casing.

2. In a sash-fastener, the combination, with the box and the gear-wheelmounted therein, of the sliding gravitating locking-pawl provided with aweighted head and a projecting stud, which engages normally with theteeth of said gearand with a series of apertures, and the pivotedbell-crank lever engaging at one endwith said apertures and provided atIn testimony whereof I affixmysignature in :o

the other with a button. presence of two witnesses.

3. In a sash-fastener, the combination, with the sliding gravitatinglocking-pawl having a THOMAS B. ROSS;

5 series of apertures in one of its members, a

weighted head, and a projecting stud, of the Witnesses: bell-cranklever, one end of which is adapted GEO. L. TORIAN, to engage saidapertures, and the other of MosEs N. Ross. which is provided with abutton.

